Marine sediment heavy metal extraction device

Abstract

The invention discloses a marine sediment heavy metal extraction device which comprises an extraction tank, a grinding and conveying mechanism and a stirring mechanism, and further comprises a top seat movably mounted at the top of the extraction tank and a screening mechanism fixedly mounted at the bottom of the grinding and conveying mechanism, and the grinding and conveying mechanism is fixedly mounted on one side of the top of the top seat; the extraction tank is rotatably mounted at the top of the base, a side box is fixedly mounted on one side of the base, and a driving mechanism extending into the lifting seat is fixedly mounted in the side box. The driving mechanism is electrified to operate and simultaneously drives the extraction tank, the stirring mechanism, the grinding and conveying mechanism and the screening mechanism to cooperatively work, so that grinding, screening, rotary stirring and mixing of the marine sediments are realized, full contact and reaction of an acid dissolving solution and the marine sediments are ensured, and complete dissolution and extraction of heavy metals in the marine sediments are realized; the marine sediment heavy metal extraction speed and effect are improved.

Description

Technical Field

[0001] The invention relates to the technical field of heavy metal extraction, in particular to a device for extracting heavy metals from marine sediments. Background Art

[0002] Marine sediments are complex geological materials formed by the combined effects of river input, seawater dissolution, biological activities and other environmental factors. Marine sediments are not only rich in organic matter and mineral particles, but may also contain a large amount of heavy metal elements. Marine sediments contain a variety of heavy metals, which come from marine pollution, such as industrial wastewater, agricultural emissions and marine transportation. Due to their solubility and mobility, these heavy metals can penetrate into sediments and pose a serious threat to the marine ecosystem. The quality of marine sediments directly determines the quality and safety of marine life. The increase in the heavy metal content in marine sediments not only affects the health of the marine ecosystem, but may also affect human health through the food chain; therefore, it is very necessary to carry out heavy metal content detection in marine sediments. When conducting heavy metal detection in marine sediments, a marine sediment heavy metal extraction device is required to extract heavy metals from marine sediments.

[0003] For example, a Chinese patent with authorization announcement number CN218506510U and authorization announcement date February 21, 2023 discloses a marine sediment heavy metal sample processing device, including a frame, a placement rack is provided on the frame, a storage bottle is placed on the placement rack, and an upper surface of the placement rack is provided with a mounting groove, the mounting groove is used to place the storage bottle, an oscillator is provided on the frame, a processing area is provided above the oscillator, a slide rail is provided on the frame, the placement rack is slidably set on the slide rail to make the placement rack approach or move away from the processing area, the placement rack includes a first fixed plate and a second fixed plate, the first fixed plate and the second fixed plate are both provided with openings, the openings are arranged opposite to each other, the openings on the first fixed plate and the second fixed plate are spliced ​​to form a mounting groove, the placement rack also includes a fixed block, the first fixed plate and the second fixed plate are both slidably set on the fixed block, and the fixed block is provided with a slide groove and two groups of cylinders, the two groups of cylinders respectively drive the first fixed plate and the second fixed plate to slide in the slide groove. The device has the following defects: due to the uneven particle size of marine sediments, the acid digestion rate is not uniform, which not only easily causes incomplete acid digestion of marine sediments, but also affects the extraction rate of heavy metals in marine sediments. Summary of the invention

[0004] The present invention aims to solve the above problems existing in the prior art marine sediment heavy metal sample processing device, and provides a marine sediment heavy metal extraction device which is easy to use and can improve the speed and effect of marine sediment heavy metal extraction.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a marine sediment heavy metal extraction device of the present invention comprises an extraction tank, a grinding and conveying mechanism and a stirring mechanism, and also comprises a top seat movably mounted on the top of the extraction tank, and a screening mechanism fixedly mounted on the bottom of the grinding and conveying mechanism, and the stirring mechanism is rotatably mounted on the bottom of the screening mechanism, the grinding and conveying mechanism is fixedly mounted on one side of the top of the top seat, the extraction tank is rotatably mounted on the top of the base, one side of the base is fixedly mounted with a side box, one side of the inside of the side box is fixedly mounted with a hydraulic rod, the top of the hydraulic rod is fixedly mounted with a lifting seat, one side of the lifting seat is fixedly connected with one side of the top seat, the top seat is driven to move up and down through the operation of the hydraulic rod through the lifting seat, and the lifting and moving top seat drives the stirring mechanism to move up and down to control the discharge of solid matter; the side box is fixedly mounted with a driving mechanism extending to the inside of the lifting seat, the extraction tank, the stirring mechanism, the grinding and conveying mechanism, and the screening mechanism are driven to operate synchronously through the driving mechanism, and the grinding, screening, rotating stirring and mixing are completed through the collaborative operation of the extraction tank, the stirring mechanism, the grinding and conveying mechanism, and the screening mechanism, so that the marine sediments and the acidic solution are fully acid-digested.

[0006] Preferably, the grinding and conveying mechanism includes a feed hopper fixedly mounted on the top of the top seat, a feed pipe fixedly mounted on one side of the feed hopper, a spiral conveying rod rotatably mounted inside the feed pipe, a linkage mechanism is installed through the inside of the spiral conveying rod, a grinding roller rotatably mounted inside the feed hopper, a docking groove is provided at one end of the grinding roller, a pulley group is fixedly mounted on one end of the grinding roller, a threaded rod is threadedly mounted on one side of the top of the feed hopper, a valve disc is rotatably mounted on the bottom of the threaded rod, and the valve disc is movably inserted at the connecting position between the feed pipe and the feed hopper.

[0007] Preferably, the linkage mechanism includes a transmission groove rod movably installed inside the screw conveying rod, and the transmission groove rod is clamped with the inside of the screw conveying rod, which does not affect the telescopic movement of the transmission groove rod inside the screw conveying rod. At the same time, the clamped transmission groove rod and the screw conveying rod are used to drive the screw conveying rod to rotate when the transmission groove rod rotates. A screw is fixedly installed on one end of the transmission groove rod, and a threaded disk is installed on the outer thread of the screw, and the threaded disk is rotatably installed at one end of the feed pipe.

[0008] Preferably, the screening mechanism includes a mounting tube fixedly installed at the bottom of the feed pipe, a screening tube fixedly installed at one end of the mounting tube, an extrusion seat movably installed inside the mounting tube, a moving tube fixedly installed at one end of the extrusion seat, a wire sleeve seat fixedly installed at one end of the moving tube, a bidirectional screw rod installed through the inside of the wire sleeve seat, and the bidirectional screw rod extends to the inside of the moving tube, and one end of the bidirectional screw rod is fixedly connected to one side of the bottom of the pulley group.

[0009] Preferably, the stirring mechanism includes a protective cover rotatably mounted on the bottom of the mounting tube, a dual-axis motor is fixedly mounted on the top of the interior of the protective cover, a cleaning rod is rotatably mounted on the top of the protective cover, the output end of the top of the dual-axis motor passes through the top of the protective cover, the output end of the top of the dual-axis motor is fixedly connected to the bottom of the cleaning rod, a horizontal adjustment component is fixedly mounted on the output end of the bottom of the dual-axis motor, four stirring paddles are fixedly mounted on the outer end of the bottom of the horizontal adjustment component, a mounting rod is fixedly mounted at the center of the bottom of the horizontal adjustment component, a floating solid-liquid separator is movably sleeved on the outer side of the mounting rod through a mounting groove, a telescopic hose is installed through the bottom of the floating solid-liquid separator, and the telescopic hose is located inside the mounting rod, a sealing disk is fixedly mounted on the bottom end of the mounting rod, and a pin hole is provided at the bottom of the sealing disk.

[0010] Preferably, the horizontal adjustment assembly includes a turntable fixedly mounted on the bottom output end of the dual-axis motor, with slide grooves equidistantly provided inside the turntable, a mounting rail fixedly mounted on the bottom of the turntable, a telescopic rod movably mounted inside the mounting rail, a slide fixedly mounted on one end of the telescopic rod, and the slide extends to the inside of the slide groove for movably connection.

[0011] Preferably, the driving mechanism includes a double-axis driving assembly fixedly mounted on one side of the side box, a spiral cam is installed on one side of the double-axis driving assembly for transmission, and a double-bevel gear rod A and a transmission bevel gear rod are meshed and connected on the other side of the double-axis driving assembly, wherein the double-bevel gear rod A is located below the transmission bevel gear rod, the bottom end of the double-bevel gear rod A is meshed and connected with the double-bevel gear rod B, one end of the double-bevel gear rod B is meshed and connected with the double-bevel gear rod C, one end of the double-bevel gear rod C is meshed and connected with a bevel gear pin rod, the top end of the bevel gear pin rod extends to the inside of the pin hole for clamping, a spline rod is fixedly mounted on the top of the transmission bevel gear rod, a bevel gear A is sleeved on the outer side of the spline rod, and bevel gear A is installed on the inner wall of the lifting seat through a bearing frame, one side of the bevel gear A is meshed and connected with the double-bevel gear rod D, one end of the double-bevel gear rod D is meshed and connected with the bevel gear B, and one end of the bevel gear B is connected with a sleeve on one side of the pulley group.

[0012] Preferably, an extended solid discharge pipe is fixedly installed inside the base, the top of the solid discharge pipe is connected to the bottom of the extraction tank, and a collecting valve pipe is fixedly installed on the other side of the base, and a connecting hose extending to the inside of the bevel gear pin is fixedly installed at one end of the collecting valve pipe.

[0013] Preferably, a gear ring is fixedly sleeved on the outer side of the bottom of the extraction tank, and the back side of the gear ring is meshedly connected with the spiral cam.

[0014] Therefore, the present invention has the following beneficial effects: the driving mechanism is powered on and driven to simultaneously drive the extraction tank, the stirring mechanism, the grinding and conveying mechanism, and the screening mechanism to work in coordination, thereby realizing the grinding, screening, rotating and stirring mixing of the marine sediments, ensuring that the acid solution and the marine sediments are fully in contact and react, and being able to effectively solve the problem of inconsistent acid digestion rates caused by uneven particle sizes of the marine sediments; firstly, the marine sediments with uneven particle sizes are ground into uniform particles by the grinding and conveying mechanism, so that the particle sizes of the marine sediments after grinding are uniform, and then the marine sediments after grinding are further screened by the screening mechanism to screen out marine sediments with uniform particle sizes, and the sediments with uniform particle sizes can ensure a uniform acid digestion rate, and the screened marine sediments enter the extraction tank and are mixed with the acid solution, and then, the forward rotating extraction tank and the reverse rotating stirring mechanism work together to fully stir and dissolve the acid solution and the sediments in the extraction tank, so that the acid solution and the sediments with uniform particle sizes are fully in contact and react, ensuring that the marine sediments are completely acid-digested, thereby realizing complete dissolution and extraction of heavy metals in the marine sediments, and improving the speed and effect of heavy metal extraction from the marine sediments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the front structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the front, inner and back sides of the present invention.

[0017] Figure 3 It is a schematic diagram of the internal structure of the back side of the present invention.

[0018] Figure 4 It is a schematic diagram of the internal structure of the mixing box of the present invention.

[0019] Figure 5 It is a schematic diagram of the internal structure of the side box of the present invention.

[0020] Figure 6 It is a schematic diagram of the internal structure of the top seat of the present invention.

[0021] Figure 7 It is a schematic diagram of the connection structure between the grinding and conveying mechanism and the screening mechanism of the present invention.

[0022] Figure 8 It is a schematic diagram of the internal structure of the screening mechanism of the present invention.

[0023] Fig. 9 It is a schematic diagram of the internal structure of the spiral conveying rod of the present invention.

[0024] Fig.10 It is a schematic diagram of the linkage mechanism structure of the present invention.

[0025] Fig.11It is a schematic diagram of the stirring mechanism structure of the present invention.

[0026] Fig.12 It is a schematic diagram of the internal structure of the feeding mechanism of the present invention.

[0027] Fig.13 It is a schematic diagram of the internal structure of the return pipe of the present invention.

[0028] In the figure: 1, base; 101, solid discharge pipe; 102, collecting valve pipe; 2, extraction tank; 201, gear ring; 3, top seat; 4, grinding and conveying mechanism; 401, feed hopper; 402, conveying pipe; 403, grinding roller; 4031, docking groove; 404, spiral conveying rod; 405, pulley group; 406, threaded rod; 407, valve disc; 408, linkage mechanism; 4081, transmission groove rod; 4082, screw; 4083, threaded disc; 5, side box; 501, lifting seat; 502, hydraulic rod; 6, screening mechanism; 601, installation pipe; 602, screening pipe; 603, extrusion seat; 604, moving pipe; 605, thread sleeve seat; 606, two-way screw; 7, stirring mechanism; 701, Protective cover; 702, double-axis motor; 703, cleaning rod; 704, horizontal adjustment assembly; 7041, turntable; 7042, slide; 7043, slide; 7044, mounting rail; 7045, telescopic rod; 705, stirring paddle; 706, mounting rod; 707, floating solid-liquid separator; 7071, telescopic hose; 708, sealing disk; 7081, pin hole; 8, driving mechanism; 801, double-axis driving assembly; 802, double-bevel gear rod A; 803, double-bevel gear rod B; 804, double-bevel gear rod C; 805, bevel gear pin rod; 806, transmission bevel gear rod; 807, spline rod; 808, bevel gear A; 809, double-bevel gear rod D; 810, bevel gear B; 811, spiral cam. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] See also Figure 1-13The present invention provides a device for extracting heavy metals from marine sediments, comprising an extraction tank 2, a grinding and conveying mechanism 4 and a stirring mechanism 7, and further comprising a top seat 3 movably mounted on the top of the extraction tank 2, and a screening mechanism 6 fixedly mounted on the bottom of the grinding and conveying mechanism 4, and the stirring mechanism 7 is rotatably mounted on the bottom of the screening mechanism 6, the grinding and conveying mechanism 4 is fixedly mounted on one side of the top of the top seat 3, the extraction tank 2 is rotatably mounted on the top of a base 1, a side box 5 is fixedly mounted on one side of the base 1, a hydraulic rod 502 is fixedly mounted on one side of the side box 5, a lifting seat 501 is fixedly mounted on the top of the hydraulic rod 502, and the lifting seat 501 is One side is fixedly connected to one side of the top seat 3, and the hydraulic rod 502 runs through the lifting seat 501 to drive the top seat 3 to move up and down, and the lifting top seat 3 drives the stirring mechanism 7 to move up and down to control the discharge of solid matter; the inside of the side box 5 is fixedly installed with a driving mechanism 8 extending to the inside of the lifting seat 501, and the driving mechanism 8 drives the extraction tank 2, the stirring mechanism 7, the grinding and conveying mechanism 4, and the screening mechanism 6 to operate synchronously, and the extraction tank 2, the stirring mechanism 7, the grinding and conveying mechanism 4, and the screening mechanism 6 work together to complete grinding, screening, rotation, stirring and mixing, so that the marine sediments and the acidic solution are fully acid-digested. It should be noted that: a liquid inlet is installed through one side of the top of the top seat 3, and an acid solution is added into the extraction tank 2 through the liquid inlet. The driving mechanism 8 is energized to drive the extraction tank 2, the stirring mechanism 7, the grinding and conveying mechanism 4, and the screening mechanism 6 to work together. The marine sediments are ground by the grinding and conveying mechanism 4, and the marine sediments with uniform particle size are screened by the screening mechanism 6 and enter the extraction tank 2. The acid solution and sediments in the extraction tank 2 are stirred and dissolved by the rotating extraction tank 2 and the rotating stirring mechanism 7. The sediments with uniform particle size can ensure a uniform acid digestion rate, so that the marine sediments are completely acid-digested. The lifting seat 501 is driven to rise and fall by the hydraulic rod 502, which drives the stirring mechanism 7 to move up and down to control the discharge of solids in the extraction tank 2.

[0031] See also Figure 6-9The grinding and conveying mechanism 4 includes a feed hopper 401 fixedly installed on the top of the top seat 3, a feed pipe 402 is fixedly installed on one side of the feed hopper 401, a spiral conveying rod 404 is rotatably installed inside the feed pipe 402, a linkage mechanism 408 is installed through the spiral conveying rod 404, a grinding roller 403 is rotatably installed inside the feed hopper 401, a docking groove 4031 is provided at one end of the grinding roller 403, a pulley group 405 is fixedly installed at one end of the grinding roller 403, a threaded rod 406 is threadedly installed on one side of the top of the feed hopper 401, a valve disc 407 is rotatably installed at the bottom of the threaded rod 406, and the valve disc 407 is movably inserted at the connection position between the feed pipe 402 and the feed hopper 401. It should be noted that: the driving mechanism 8 is powered on to drive the grinding and conveying mechanism 4 to operate, the marine sediments are put into the feed hopper 401, and the rotating grinding roller 403 grinds the marine sediments inside the feed hopper 401. After the grinding is completed, the valve disc 407 is driven to rise by rotating the threaded rod 406 to extend from the connection position between the feed pipe 402 and the feed hopper 401, so that the feed pipe 402 and the feed hopper 401 form a feed channel, and the linkage mechanism 408 is docked with the docking groove 4031, so that the spiral conveying rod 404 is linked with the grinding roller 403, and the rotating grinding roller 403 drives the spiral conveying rod 404 to rotate, and the rotating spiral conveying rod 404 conveys the marine sediments ground inside the feed hopper 401 to the screening mechanism 6 for subsequent screening.

[0032] See also Fig. 9 The linkage mechanism 408 includes a transmission slot rod 4081 movably installed inside the spiral conveying rod 404, and the transmission slot rod 4081 is clamped with the inside of the spiral conveying rod 404, which does not affect the telescopic movement of the transmission slot rod 4081 inside the spiral conveying rod 404. At the same time, the clamped transmission slot rod 4081 and the spiral conveying rod 404 are used to drive the spiral conveying rod 404 to rotate when the transmission slot rod 4081 rotates. A screw 4082 is fixedly installed on one end of the transmission slot rod 4081, and a threaded disk 4083 is threadedly installed on the outer side of the screw 4082, and the threaded disk 4083 is rotatably installed at one end of the conveying pipe 402. It should be noted that: rotating the threaded disk 4083 drives the threaded screw 4082 to move horizontally, the horizontally moving screw 4082 drives the transmission slot rod 4081 to move horizontally to the inside of the docking slot 4031, and is clamped with the docking slot 4031, the rotating grinding roller 403 drives the screw conveying rod 404 to rotate through the cooperation between the transmission slot rod 4081 and the docking slot 4031, and the rotating screw conveying rod 404 can transport marine sediments to the inside of the installation pipe 601.

[0033] See also Figure 6-8The screening mechanism 6 includes a mounting tube 601 fixedly installed at the bottom of the feed pipe 402, a screening tube 602 is fixedly installed at one end of the mounting tube 601, an extrusion seat 603 is movably installed inside the mounting tube 601, a moving tube 604 is fixedly installed at one end of the extrusion seat 603, a wire sleeve seat 605 is fixedly installed at one end of the moving tube 604, a bidirectional screw rod 606 is installed through the inside of the wire sleeve seat 605, and the bidirectional screw rod 606 extends to the inside of the moving tube 604, and one end of the bidirectional screw rod 606 is fixedly connected to one side of the bottom of the pulley group 405. It should be noted that: the grinding roller 403 is connected to the bidirectional screw 606 through the pulley group 405, the rotating grinding roller 403 drives the bidirectional screw 606 to rotate synchronously through the pulley group 405, the rotating bidirectional screw 606 drives the movable tube 604 to move horizontally back and forth through the thread sleeve seat 605, the horizontally reciprocating movable tube 604 drives the extrusion seat 603 to move horizontally back and forth, the horizontally reciprocating extrusion seat 603 transports the marine sediments inside the mounting tube 601 to the screening tube 602, and the marine sediments are transported to the inside of the extraction tank 2 after being filtered by squeezing the marine sediments.

[0034] See also Figure 10-11The stirring mechanism 7 includes a protective cover 701 rotatably mounted at the bottom of the mounting tube 601, a dual-axis motor 702 is fixedly mounted on the top of the interior of the protective cover 701, a cleaning rod 703 is rotatably mounted on the top of the protective cover 701, an output end of the top of the dual-axis motor 702 passes through the top of the protective cover 701, and the output end of the top of the dual-axis motor 702 is fixedly connected to the bottom of the cleaning rod 703, a horizontal adjustment component 704 is fixedly mounted on the output end of the bottom of the dual-axis motor 702, four stirring paddles 705 are fixedly mounted on the outer end of the bottom of the horizontal adjustment component 704, a mounting rod 706 is fixedly mounted at the center of the bottom of the horizontal adjustment component 704, a floating solid-liquid separator 707 is movably sleeved on the outer side of the mounting rod 706 through a mounting groove, a telescopic hose 7071 is installed through the bottom of the floating solid-liquid separator 707, and the telescopic hose 7071 is located inside the mounting rod 706, a sealing disk 708 is fixedly mounted on the bottom end of the mounting rod 706, and a pin hole 7081 is opened at the bottom of the sealing disk 708. It should be noted that: the dual-axis motor 702 is powered on to drive the cleaning rod 703 and the horizontal adjustment component 704 to run synchronously. The running cleaning rod 703 can clean the marine sediment on the top of the protective cover 701, and the running horizontal adjustment component 704 can adjust the horizontal position of the four stirring paddles 705, so that the stirring paddles 705 can be horizontally adjusted during the rotation and stirring process, which is convenient for fully mixing the solution and marine sediment inside the extraction tank 2; the liquid outlet at the bottom of the floating solid-liquid separator 707 is always kept below the liquid level through the floating solid-liquid separator 707. When collecting the completely acid-lyzed heavy metal solution, the floating solid-liquid separator 707 uses the telescopic hose 7071 to transport the solution for sampling through the siphon principle, and the telescopic hose 7071 can be telescoped with the floating solid-liquid separator 707, and the sealing disk 708 can seal the bottom of the extraction tank 2.

[0035] See also Fig.12 , the horizontal adjustment component 704 includes a turntable 7041 fixedly mounted on the bottom output end of the dual-axis motor 702, and chute 7042 is evenly spaced inside the turntable 7041. A mounting rail 7044 is fixedly mounted on the bottom of the turntable 7041, and a telescopic rod 7045 is movably mounted inside the mounting rail 7044. A slide 7043 is fixedly mounted on one end of the telescopic rod 7045, and the slide 7043 extends to the inside of the chute 7042 for movably connection. It should be noted that: the dual-axis motor 702 is powered on to drive the turntable 7041 to rotate, and the rotating turntable 7041 drives the telescopic rod 7045 to telescope and move inside the mounting rail 7044 by the cooperation of the chute 7042 and the slide 7043, so as to facilitate the adjustment of the telescopic length of the telescopic rod 7045, and the horizontal position of the four stirring paddles 705 is adjusted by adjusting the telescopic length of the telescopic rod 7045.

[0036] See also Fig.13The driving mechanism 8 includes a double-shaft driving assembly 801 fixedly mounted on one side of the inner part of the side box 5, a spiral cam 811 is installed on one side of the double-shaft driving assembly 801, and a double-bevel gear rod A802 and a transmission bevel gear rod 806 are meshedly connected on the other side of the double-shaft driving assembly 801, wherein the double-bevel gear rod A802 is located below the transmission bevel gear rod 806, the bottom end of the double-bevel gear rod A802 is meshedly connected with the double-bevel gear rod B803, one end of the double-bevel gear rod B803 is meshedly connected with the double-bevel gear rod C804, and the double-bevel gear rod C804 is meshedly connected with the double-bevel gear rod A802. One end of the bevel gear is meshed with a bevel gear pin 805, the top of the bevel gear pin 805 extends to the inside of the pin hole 7081 and is clamped, the top of the transmission bevel gear rod 806 is fixedly installed with a spline rod 807, the outer side of the spline rod 807 is sleeved with a bevel gear A808, and the bevel gear A808 is installed on the inner wall of the lifting seat 501 through a bearing frame, one side of the bevel gear A808 is meshed with a double bevel gear rod D809, one end of the double bevel gear rod D809 is meshed with a bevel gear B810, and one end of the bevel gear B810 is connected with a sleeve on one side of the pulley group 405. It should be noted that: the dual-axis drive assembly 801 is powered on and drives the spiral cam 811, the double-bevel gear rod A802, and the transmission bevel gear rod 806 to rotate at the same time. The rotating transmission bevel gear rod 806 drives the bevel gear A808 to rotate through the top spline rod 807. The rotating bevel gear A808 drives the bevel gear B810 to rotate through the meshing double-bevel gear rod D809. The rotating bevel gear B810 drives the card sleeve connected pulley group 405 to rotate. The rotating pulley group 405 drives the grinding roller 403 and the bidirectional screw 606 to rotate at the same time to complete the grinding and screening work; the rotating double-bevel gear rod A802 is meshed and connected through the bottom end. The double-bevel gear rod B803 cooperates with the double-bevel gear rod C804 to drive the bevel gear pin rod 805 to rotate. The rotating bevel gear pin rod 805 drives the mounting rod 706 on the top of the sealing disk 708 to rotate through the pin hole 7081. The rotating mounting rod 706 drives the four stirring paddles 705 at the bottom of the horizontal adjustment component 704 to rotate; the rotating spiral cam 811 drives the extraction tank 2 to rotate through the meshing gear ring 201. The rotating extraction tank 2 and the rotating four stirring paddles 705 rotate in the opposite direction, so that the acid solution and the marine sediment inside the extraction tank 2 can be fully stirred and mixed, thereby improving the reaction speed of the acid solution and the marine sediment.

[0037] See also Figure 1-3, the base 1 is fixedly installed with an extended solid discharge pipe 101, the top of the solid discharge pipe 101 is connected to the bottom of the extraction tank 2, and the other side of the base 1 is fixedly installed with a collecting valve pipe 102, and one end of the collecting valve pipe 102 is fixedly installed with a connecting hose extending to the inside of the bevel gear pin 805. It should be noted that: the sealing disk 708 is opened upward, so that the solid matter after the reaction at the bottom of the extraction tank 2 is collected through the solid discharge pipe 101, which is convenient for unified treatment of the solid matter after the reaction to avoid environmental pollution, the collecting valve pipe 102 is opened, and the connecting hose and the telescopic hose 7071 form a passage, and the heavy metal solution extracted from the inside of the extraction tank 2 is siphoned through the floating solid-liquid separator 707 by the siphon principle, and the siphoned heavy metal solution is transported to the collecting valve pipe 102 through the telescopic hose 7071 and the connecting hose, and the heavy metal solution is sampled and collected through the collecting valve pipe 102 to facilitate the heavy metal content inspection.

[0038] See also Figure 1-3 The outer side of the bottom of the extraction tank 2 is fixedly sleeved with a toothed ring 201, and the back of the toothed ring 201 is meshed with the spiral cam 811. It should be noted that the rotating spiral cam 811 drives the meshed toothed ring 201 to rotate, and the rotating toothed ring 201 drives the extraction tank 2 to rotate, and the rotating extraction tank 2 and the four rotating stirring paddles 705 form a positive and negative rotation, so as to fully disturb the mixed solution in the extraction tank 2 and accelerate the reaction rate of the mixed solution.

[0039] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A device for extracting heavy metals from marine sediments, comprising an extraction tank (2), a grinding and conveying mechanism (4) and a stirring mechanism (7), characterized in that: It also includes a top seat (3) movably mounted on the top of the extraction tank (2), and a screening mechanism (6) fixedly mounted on the bottom of the grinding and conveying mechanism (4), and a stirring mechanism (7) rotatably mounted on the bottom of the screening mechanism (6), the grinding and conveying mechanism (4) is fixedly mounted on one side of the top of the top seat (3), the extraction tank (2) is rotatably mounted on the top of the base (1), a side box (5) is fixedly mounted on one side of the base (1), a hydraulic rod (502) is fixedly mounted on one side of the inside of the side box (5), a lifting seat (501) is fixedly mounted on the top of the hydraulic rod (502), one side of the lifting seat (501) is fixedly connected to one side of the top seat (3), the hydraulic rod (502) is operated through the lifting seat (501) to drive the top seat (3) to move up and down, and the lifting and moving top seat (3) drives the stirring mechanism (7) to move up and down, thereby controlling the discharge of solid matter; A driving mechanism (8) extending into the interior of the lifting seat (501) is fixedly installed inside the side box (5), and the driving mechanism (8) drives the extraction tank (2), the stirring mechanism (7), the grinding and conveying mechanism (4), and the screening mechanism (6) to operate synchronously. The extraction tank (2), the stirring mechanism (7), the grinding and conveying mechanism (4), and the screening mechanism (6) work together to complete grinding, screening, rotation, stirring and mixing, so that the marine sediments and the acid solution are fully acid-digested.

2. The device for extracting heavy metals from marine sediments according to claim 1, characterized in that: The grinding and conveying mechanism (4) comprises a feed hopper (401) fixedly mounted on the top of the top seat (3); a feed pipe (402) fixedly mounted on one side of the feed hopper (401); a spiral conveying rod (404) rotatably mounted inside the feed pipe (402); a linkage mechanism (408) penetratingly mounted inside the spiral conveying rod (404); a grinding roller (403) rotatably mounted inside the feed hopper (401); a docking groove (4031) is provided at one end of the grinding roller (403); a pulley group (405) is fixedly mounted on one end of the grinding roller (403); a threaded rod (406) penetrating therethrough is threadedly mounted on one side of the top of the feed hopper (401); a valve disc (407) rotatably mounted on the bottom of the threaded rod (406); and the valve disc (407) is movably plugged into a connection position between the feed pipe (402) and the feed hopper (401).

3. The device for extracting heavy metals from marine sediments according to claim 2, characterized in that: The linkage mechanism (408) comprises a transmission slot rod (4081) movably mounted inside the spiral conveying rod (404), and the transmission slot rod (4081) is clamped with the inside of the spiral conveying rod (404) so ​​as not to affect the telescopic movement of the transmission slot rod (4081) inside the spiral conveying rod (404). At the same time, the clamped transmission slot rod (4081) and the spiral conveying rod (404) are used to drive the spiral conveying rod (404) to rotate when the transmission slot rod (4081) rotates. A screw rod (4082) is fixedly mounted on one end of the transmission slot rod (4081), and a threaded disk (4083) is threadedly mounted on the outer side of the screw rod (4082), and the threaded disk (4083) is rotatably mounted on one end of the conveying pipe (402).

4. The device for extracting heavy metals from marine sediments according to claim 2, characterized in that: The screening mechanism (6) comprises a mounting tube (601) fixedly mounted at the bottom of the feed pipe (402); a screening tube (602) is fixedly mounted on one end of the mounting tube (601); an extrusion seat (603) is movably mounted inside the mounting tube (601); a moving tube (604) is fixedly mounted on one end of the extrusion seat (603); a thread sleeve seat (605) is fixedly mounted on one end of the moving tube (604); a bidirectional screw rod (606) is installed through the inside of the thread sleeve seat (605); the bidirectional screw rod (606) extends into the inside of the moving tube (604); and one end of the bidirectional screw rod (606) is fixedly connected to one side of the bottom of the pulley group (405).

5. The device for extracting heavy metals from marine sediments according to claim 4, characterized in that: The stirring mechanism (7) comprises a protective cover (701) rotatably mounted on the bottom of the mounting tube (601); a dual-axis motor (702) is fixedly mounted on the top of the protective cover (701); a cleaning rod (703) is rotatably mounted on the top of the protective cover (701); an output end of the top of the dual-axis motor (702) passes through the top of the protective cover (701); the output end of the top of the dual-axis motor (702) is fixedly connected to the bottom of the cleaning rod (703); a horizontal adjustment component (704) is fixedly mounted on the output end of the bottom of the dual-axis motor (702); and the horizontal adjustment component (704) is fixedly mounted on the output end of the bottom of the dual-axis motor (702). 4) Four stirring paddles (705) are fixedly installed at the outer end of the bottom, a mounting rod (706) is fixedly installed at the center of the bottom of the horizontal adjustment component (704), a floating solid-liquid separator (707) is movably sleeved on the outer side of the mounting rod (706) through a mounting groove, a telescopic hose (7071) is installed through the bottom of the floating solid-liquid separator (707), and the telescopic hose (7071) is located inside the mounting rod (706), a sealing disk (708) is fixedly installed at the bottom end of the mounting rod (706), and a pin hole (7081) is opened at the bottom of the sealing disk (708).

6. The device for extracting heavy metals from marine sediments according to claim 5, characterized in that: The horizontal adjustment component (704) comprises a turntable (7041) fixedly mounted on the bottom output end of the dual-axis motor (702); slide grooves (7042) are equidistantly provided inside the turntable (7041); a mounting rail (7044) is fixedly mounted on the bottom of the turntable (7041); a telescopic rod (7045) is movably mounted inside the mounting rail (7044); a sliding member (7043) is fixedly mounted on one end of the telescopic rod (7045); and the sliding member (7043) extends to the inside of the slide groove (7042) for movably connection.

7. The device for extracting heavy metals from marine sediments according to claim 1, characterized in that: The driving mechanism (8) comprises a double-shaft driving assembly (801) fixedly mounted on one side of the inside of the side box (5); a spiral cam (811) is installed on one side of the double-shaft driving assembly (801); and a double-bevel gear rod A (802) and a transmission bevel gear rod (806) are meshedly connected on the other side of the double-shaft driving assembly (801); the double-bevel gear rod A (802) is located below the transmission bevel gear rod (806); the bottom end of the double-bevel gear rod A (802) is meshedly connected to the double-bevel gear rod B (803); one end of the double-bevel gear rod B (803) is meshedly connected to the double-bevel gear rod C (804); and the double-bevel gear rod C (804) is meshedly connected to the transmission bevel gear rod (806). One end of the bevel gear pin rod (805) is meshedly connected, the top end of the bevel gear pin rod (805) extends to the inside of the pin hole (7081) and is clamped, the top end of the transmission bevel gear rod (806) is fixedly installed with a spline rod (807), the outer side of the spline rod (807) is sleeved with a bevel gear A (808), and the bevel gear A (808) is installed on the inner wall of the lifting seat (501) through a bearing frame, one side of the bevel gear A (808) is meshedly connected with a double bevel gear rod D (809), one end of the double bevel gear rod D (809) is meshedly connected with a bevel gear B (810), and one end of the bevel gear B (810) is connected to a sleeve on one side of the pulley group (405).

8. The device for extracting heavy metals from marine sediments according to claim 1, characterized in that: An extended solid discharge pipe (101) is fixedly installed inside the base (1), and the top of the solid discharge pipe (101) is connected to the bottom of the extraction tank (2). A collecting valve pipe (102) is fixedly installed on the other side of the base (1), and a connecting hose extending to the inside of the bevel gear pin (805) is fixedly installed at one end of the collecting valve pipe (102).

9. The device for extracting heavy metals from marine sediments according to claim 7, characterized in that: A toothed ring (201) is fixedly sleeved on the outer side of the bottom of the extraction tank (2), and the back side of the toothed ring (201) is meshedly connected to the spiral cam (811).

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